EP 1873261 A1 20080102 - Component of variable thickness having residual compressive stresses therein, and method therefor
Title (en)
Component of variable thickness having residual compressive stresses therein, and method therefor
Title (de)
Komponente von variabler Dicke mit restlichen Druckspannungen sowie Verfahren dafür
Title (fr)
Composant d'épaisseur variable ayant des contraintes compressives résiduelles, et procédé correspondant
Publication
Application
Priority
US 42814906 A 20060630
Abstract (en)
A method of reducing crack propagation includes: providing a metallic component (122) having an exterior surface, and using a burnishing element (114) to apply a varying to the exterior surface within a selected area, within which the component has a varying thickness, so as to create a region (150) of residual compressive stress of surrounded by an interior boundary (154). The distance from the interior boundary (148) to the exterior surface at any location within the selected area is independent of the thickness of the component (122) at that location, and may be controlled by changing the pressure and/or an amount of overlap between burnished segments.
IPC 8 full level
C21D 7/08 (2006.01); B23P 9/02 (2006.01); B24B 39/00 (2006.01)
CPC (source: EP US)
B23P 9/02 (2013.01 - EP US); B24B 39/00 (2013.01 - EP US); C21D 7/08 (2013.01 - EP US); F01D 5/286 (2013.01 - EP US); C21D 2221/00 (2013.01 - EP US); C21D 2221/10 (2013.01 - EP US); F05D 2230/20 (2013.01 - EP US); F05D 2230/26 (2013.01 - EP US); F05D 2230/90 (2013.01 - EP US); F05D 2260/94 (2013.01 - EP US); Y10T 29/4932 (2015.01 - EP US)
Citation (applicant)
- WO 0164398 A2 20010907 - LAMBDA RES INC [US]
- EP 1175956 A1 20020130 - GEN ELECTRIC [US]
Citation (search report)
- [X] WO 0164398 A2 20010907 - LAMBDA RES INC [US]
- [X] EP 1175956 A1 20020130 - GEN ELECTRIC [US]
- [Y] JP S6160875 A 19860328 - HITACHI LTD
- [XP] WO 2007055864 A2 20070518 - SURFACE TECHNOLOGY HOLDINGS [US]
- [XY] ASM INTERNATIONAL HANDBOOK COMMITTEE: "ASM HANDBOOK. VOLUME 4 HEAT TREATING", August 1991, ASM INTERNATIONAL, USA, XP002456588
Designated contracting state (EPC)
DE FR GB IT
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1873261 A1 20080102; EP 1873261 B1 20100825; CN 101096966 A 20080102; DE 602007008643 D1 20101007; JP 2008014309 A 20080124; SG 138546 A1 20080128; US 2008003109 A1 20080103; US 7530792 B2 20090512
DOCDB simple family (application)
EP 07110593 A 20070619; CN 200710129012 A 20070629; DE 602007008643 T 20070619; JP 2007164506 A 20070622; SG 2007041890 A 20070608; US 42814906 A 20060630